Article mentioned Tesla OTA -- related to Tesla OTA frequency here 3rd party website that gives an overview of Tesla car software updates. They are self-reporting OTA updates. Other expandable options on that page let you view the updates by several groupings. ie. country, AP1 vs AP2, etc
Aside: you can have it auto-update that report but I never did that. It uses a 'Tesla API token' (vs id/passwd) like the Tesla phone app does for connecting. These expire so I didn't bother.